mitmproxy/libmproxy/console/contentview.py
Aldo Cortesi 35f4a1c424 Tune content viewing to maintain responsiveness:
- Reduce display cutoff to 20k.
- Make sure that we only indent the visible part of a JS body, not the whole
thing.
2012-04-01 10:09:25 +12:00

265 lines
7.5 KiB
Python

import re, cStringIO
import urwid
from PIL import Image
from PIL.ExifTags import TAGS
import common
from .. import utils, encoding, flow
from ..contrib import jsbeautifier
VIEW_CUTOFF = 1024*20
VIEW_CONTENT_RAW = 0
VIEW_CONTENT_HEX = 1
VIEW_CONTENT_PRETTY = 2
CONTENT_VIEWS = {
VIEW_CONTENT_RAW: "raw",
VIEW_CONTENT_HEX: "hex",
VIEW_CONTENT_PRETTY: "pretty"
}
VIEW_CONTENT_PRETTY_TYPE_AUTO = 0
VIEW_CONTENT_PRETTY_TYPE_JSON = 1
VIEW_CONTENT_PRETTY_TYPE_XML = 2
VIEW_CONTENT_PRETTY_TYPE_URLENCODED = 3
VIEW_CONTENT_PRETTY_TYPE_MULTIPART = 4
VIEW_CONTENT_PRETTY_TYPE_JAVASCRIPT = 5
VIEW_CONTENT_PRETTY_TYPE_IMAGE = 6
CONTENT_PRETTY_NAMES = {
VIEW_CONTENT_PRETTY_TYPE_JSON: "JSON",
VIEW_CONTENT_PRETTY_TYPE_XML: "XML",
VIEW_CONTENT_PRETTY_TYPE_URLENCODED: "URL-encoded",
VIEW_CONTENT_PRETTY_TYPE_MULTIPART: "Multipart Form",
VIEW_CONTENT_PRETTY_TYPE_JAVASCRIPT: "JavaScript",
VIEW_CONTENT_PRETTY_TYPE_IMAGE: "Image",
}
CONTENT_TYPES_MAP = {
"text/html": VIEW_CONTENT_PRETTY_TYPE_XML,
"application/json": VIEW_CONTENT_PRETTY_TYPE_JSON,
"text/xml": VIEW_CONTENT_PRETTY_TYPE_XML,
"multipart/form-data": VIEW_CONTENT_PRETTY_TYPE_MULTIPART,
"application/x-www-form-urlencoded": VIEW_CONTENT_PRETTY_TYPE_URLENCODED,
"application/x-javascript": VIEW_CONTENT_PRETTY_TYPE_JAVASCRIPT,
"application/javascript": VIEW_CONTENT_PRETTY_TYPE_JAVASCRIPT,
"text/javascript": VIEW_CONTENT_PRETTY_TYPE_JAVASCRIPT,
"image/png": VIEW_CONTENT_PRETTY_TYPE_IMAGE,
"image/jpeg": VIEW_CONTENT_PRETTY_TYPE_IMAGE,
"image/gif": VIEW_CONTENT_PRETTY_TYPE_IMAGE,
"image/vnd.microsoft.icon": VIEW_CONTENT_PRETTY_TYPE_IMAGE,
"image/x-icon": VIEW_CONTENT_PRETTY_TYPE_IMAGE,
}
def trailer(clen, txt):
rem = clen - VIEW_CUTOFF
if rem > 0:
txt.append(urwid.Text(""))
txt.append(
urwid.Text(
[
("highlight", "... %s of data not shown"%utils.pretty_size(rem))
]
)
)
def _view_text(content, total):
"""
Generates a body for a chunk of text.
"""
txt = []
for i in utils.cleanBin(content).splitlines():
txt.append(
urwid.Text(("text", i))
)
trailer(total, txt)
return txt
def view_raw(hdrs, content):
txt = _view_text(content[:VIEW_CUTOFF], len(content))
return "Raw", txt
def view_hex(hdrs, content):
txt = []
for offset, hexa, s in utils.hexdump(content[:VIEW_CUTOFF]):
txt.append(urwid.Text([
("offset", offset),
" ",
("text", hexa),
" ",
("text", s),
]))
trailer(len(content), txt)
return "HEX", txt
def view_xmlish(hdrs, content):
txt = []
for i in utils.pretty_xmlish(content[:VIEW_CUTOFF]):
txt.append(
urwid.Text(("text", i)),
)
trailer(len(content), txt)
return "XML-like data", txt
def view_json(hdrs, content):
lines = utils.pretty_json(content)
if lines:
txt = []
sofar = 0
for i in lines:
sofar += len(i)
txt.append(
urwid.Text(("text", i)),
)
if sofar > VIEW_CUTOFF:
break
trailer(sum(len(i) for i in lines), txt)
return "JSON", txt
def view_multipart(hdrs, content):
v = hdrs.get("content-type")
if v:
v = utils.parse_content_type(v[0])
if not v:
return
boundary = v[2].get("boundary")
if not boundary:
return
rx = re.compile(r'\bname="([^"]+)"')
keys = []
vals = []
for i in content.split("--" + boundary):
parts = i.splitlines()
if len(parts) > 1 and parts[0][0:2] != "--":
match = rx.search(parts[1])
if match:
keys.append(match.group(1) + ":")
vals.append(utils.cleanBin(
"\n".join(parts[3+parts[2:].index(""):])
))
r = [
urwid.Text(("highlight", "Form data:\n")),
]
r.extend(common.format_keyvals(
zip(keys, vals),
key = "header",
val = "text"
))
return "Multipart form", r
def view_urlencoded(hdrs, content):
lines = utils.urldecode(content)
if lines:
body = common.format_keyvals(
[(k+":", v) for (k, v) in lines],
key = "header",
val = "text"
)
return "URLEncoded form", body
def view_javascript(hdrs, content):
opts = jsbeautifier.default_options()
opts.indent_size = 2
res = jsbeautifier.beautify(content[:VIEW_CUTOFF], opts)
return "JavaScript", _view_text(res, len(content))
def view_image(hdrs, content):
try:
img = Image.open(cStringIO.StringIO(content))
except IOError:
return None
parts = [
("Format", str(img.format_description)),
("Size", "%s x %s px"%img.size),
("Mode", str(img.mode)),
]
for i in sorted(img.info.keys()):
if i != "exif":
parts.append(
(str(i), str(img.info[i]))
)
if hasattr(img, "_getexif"):
ex = img._getexif()
if ex:
for i in sorted(ex.keys()):
tag = TAGS.get(i, i)
parts.append(
(str(tag), str(ex[i]))
)
clean = []
for i in parts:
clean.append([utils.cleanBin(i[0]), utils.cleanBin(i[1])])
fmt = common.format_keyvals(
clean,
key = "header",
val = "text"
)
return "%s image"%img.format, fmt
PRETTY_FUNCTION_MAP = {
VIEW_CONTENT_PRETTY_TYPE_XML: view_xmlish,
VIEW_CONTENT_PRETTY_TYPE_JSON: view_json,
VIEW_CONTENT_PRETTY_TYPE_URLENCODED: view_urlencoded,
VIEW_CONTENT_PRETTY_TYPE_MULTIPART: view_multipart,
VIEW_CONTENT_PRETTY_TYPE_JAVASCRIPT: view_javascript,
VIEW_CONTENT_PRETTY_TYPE_IMAGE: view_image,
}
def get_view_func(viewmode, pretty_type, hdrs, content):
"""
Returns a function object.
"""
if viewmode == VIEW_CONTENT_HEX:
return view_hex
elif viewmode == VIEW_CONTENT_RAW:
return view_raw
else:
if pretty_type == VIEW_CONTENT_PRETTY_TYPE_AUTO:
ctype = hdrs.get("content-type")
if ctype:
ctype = ctype[0]
ct = utils.parse_content_type(ctype) if ctype else None
if ct:
pretty_type = CONTENT_TYPES_MAP.get("%s/%s"%(ct[0], ct[1]))
if not pretty_type and utils.isXML(content):
pretty_type = VIEW_CONTENT_PRETTY_TYPE_XML
return PRETTY_FUNCTION_MAP.get(pretty_type, view_raw)
def get_content_view(viewmode, pretty_type, hdrItems, content):
"""
Returns a (msg, body) tuple.
"""
msg = []
hdrs = flow.ODictCaseless([list(i) for i in hdrItems])
enc = hdrs.get("content-encoding")
if enc and enc[0] != "identity":
decoded = encoding.decode(enc[0], content)
if decoded:
content = decoded
msg.append("[decoded %s]"%enc[0])
if viewmode == VIEW_CONTENT_PRETTY and pretty_type != VIEW_CONTENT_PRETTY_TYPE_AUTO:
msg.append("[forced to %s]"%(CONTENT_PRETTY_NAMES[pretty_type]))
func = get_view_func(viewmode, pretty_type, hdrs, content)
ret = func(hdrs, content)
if not ret:
ret = view_raw(hdrs, content)
msg.append(ret[0])
return " ".join(msg), ret[1]